US3874192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil cooling apparatus for refrigerators
Assignee: Mayekawa Manufacturing Co
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Filing: 1974-02-26
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Granted: 1975-04-01
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Expires: 1994-02-26
Abstract
Abstract A refrigerator is connected to an oil separator through an exhaust gas conduit in which an atomizing section is provided and connected to a coolant supply source, whereby the coolant as atomized is easily evaporated by the exhaust gas to thereby cool the latter by latent heat upon the evaporation.
Inventors
- 👤 Eiji Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:55
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/06; F04B39/062; F25; F25B; F25B31/00; F25B31/002; F25B31/004; F25B43/00; F25B43/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
44 words
Oil cooling apparatus for a refrigerator comprising a refrigerator, an oil separator, an exhaust gas conduit for connecting said refrigerator and oil separator to each other, an atomization means provided within said conduit, and a liquid coolant supply source connected to said atomization means.
Claim 2
Dependent Claim
44 words
Oil cooling apparatus for a refrigerator comprising a refrigerator, an oil separator, an exhaust gas conduit for connecting said refrigerator and oil separator to each other, an atomization means provided within said conduit, and a liquid coolant supply source connected to said atomization means.
Claim 3
Dependent Claim
19 words
Oil cooling apparatus as set forth in claim 1, wherein said liquid coolant supply source comprises a liquid receptacle.
Claim 4
Dependent Claim
18 words
Oil cooling apparatus as set forth in claim 1, wherein said liquid coolant supply source comprises a condenser.
Claim 5
Dependent Claim
16 words
Oil cooling apparatus as set forth in cliam 1, wherein said atomization means includes an ejector.
Claim 6
Dependent Claim
16 words
Oil cooling apparatus as set forth in cliam 1, wherein said atomization means includes an ejector.
Claim 7
Dependent Claim
35 words
Oil cooling apparatus as set forth in claim 2, wherein said liquid receptacle is positioned at a higher level than that of the exhaust gas conduit in order to generate a potential energy between them.
Claim 8
Dependent Claim
41 words
Oil cooling apparatus as set forth in claim 1, wherein the oil cooled and separated from the gas in said oil separator is injected into said refrigerator and introduced for lubriCation of bearings of said refrigerator without installing any oil cooler.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |